ENVELOPE INVESTIGATION

What HAPPENED to this envelope?
Event / Clue or Evidence
In what ORDER did things happen?
Sequence of Events / Evidence
What do you know about the PEOPLE who sent
and received the envelope?
Sender / Evidence
Receiver / Evidence

OBSERVATION OR INFERENCE?
Observation: information gathered directly by using
one or more of the five senses—seeing, touching,
hearing, tasting, smelling.
Inference: a logical conclusion based on observations
and past experience.
Classify the following as observations or inferences.
• There were two stamps on the envelope.
• The letter was mailed on September 9, 1997.
• The person who sealed the envelope was a woman.
• The letter was opened with a letter opener.
• The ink on the address is black.
• An address is printed in the upper left-hand corner.
• The letter was mailed from the address in the upper
left-hand corner.

Name ______
Period______Date______
NOTES ON THE POWELL EXPEDITION
As you watch the River Song video, write down
• Three interesting things about the Powell expedition.
• Three interesting things about the natural history of the Grand Canyon.

Powell Expedition
1.______
2.______
3.______
Grand Canyon
1.______
2.______
3.______
After reading The Journal of John Wesley Powell, record the following information.
Who were the expedition members?

Name / Description

List the kinds of food Powell took on the expedition.
List the equipment Powell took on the expedition.
If you were to make the same trip today down the Green and ColoradoRivers, what
supplies and equipment would you take?
Write a short paragraph describing the type of person you think Powell was. Don’t write a physical description. Describe his character, attitudes, and values. Use the information in the reading to help you make these inferences about Powell. Support your inferences with examples.

Name ______
Period ______Date______
GRAND CANYON FIELD-TRIP GUIDE
Stop 1: Multimedia Panoramic View—Pima Point
From the Visitor’s Center,
• Go to the Expeditions Desk.
• Select the Grand Canyon Rim on the clipboard.
• On the map, click on the words “Pima Point.”
• Use the navigation tool to look around.
At this stop you will look around a QuickTime virtual reality panoramic view from the rim of the Grand Canyon. You may see some other sights as well. Write down two or three questions about the Grand Canyon after you finish with the multimedia.
Information about Pima Point
Pima Point is one of the places along West Rim Drive where you can get a great view of the Colorado River flowing through the Grand Canyon. In the distance you can see the bathtub ring of the Coconino Sandstone. In the depths of the canyon, you can see the dark Precambrian rocks.
Pima Point takes its name from the Pima people of south central Arizona. Monument Creek lies east of Pima Point. Rocky debris carried down the creek eventually ended up in the Colorado River, creating major whitewater, Granite Rapids.
Barely visible remnants of Hermit Camp remain below and to the west of Pima Point. This tent-cabin lodging for mule riders operated from about 1911 to 1930. Around 1925, a 6300-foot cable tram connected the rim to the site to carry supplies.
Elevation: 6720 feet
Questions

Stop 2: Earth History Photo Exhibit
Look carefully at the images on pages 4—7 in the Earth History Resources book. Describe two or three features you observe in each image.
Space shuttle view of the Grand Canyon
View of the North Rim of the Grand Canyon
View of Vasey’s Paradise at river level
View along BrightAngelTrail
Stop 3: Grand Canyon Rock Samples
Describe each rock sample.
Rock 71

Rock 7
Rock 8

Rock 10